package com.empresas.locais;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

public class ConecaoHibernateFilter implements Filter
{
	private SessionFactory sf;
	
	@Override
	public void destroy() 
	{	
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException 
	{
		try
		{
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		} catch( Throwable ex)
		{
			try
			{
				if(this.sf.getCurrentSession().getTransaction().isActive())
				{
					this.sf.getCurrentSession().getTransaction().rollback();
				}
			} catch( Throwable e)
			{
				e.printStackTrace();
			}
			throw new ServletException();
		}
	}

	@Override
	public void init(FilterConfig conf) throws ServletException 
	{
		this.sf = HibernateUtil.getSession();
	}

}
